Photoelectronic Technology Committee Conferences最新文献_第5页

A fast and practical calibration method for the phase measuring profilometry 一种快速实用的相位测量轮廓校正方法

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2181806

Lei Wu, Yanshan Xiao, Zi-wei Liu, Longfei Han

引用次数: 0

A non-destructive readout circuit of the linear array image sensor with over 90dB dynamic range and 190k fps for radar system 一种用于雷达系统的动态范围超过90dB、帧速率为190k的线性阵列图像传感器无损读出电路

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2182154

Congjie Yang, Zhiyuan Gao, Xinji Zeng, S. Yao, Jing Gao

引用次数: 0

Automatic bias control system of high speed electro-optic modulator in DPSK Systems DPSK系统中高速电光调制器的自动偏置控制系统

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2179435

Miao Xu, S. Tong, Dashuai Wang

引用次数: 2

An extraction method of the tank characteristic quantities in infrared thermal images 红外热图像中坦克特征量的提取方法

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2087201

Kunpeng Zheng, Zhenbiao Wei, Yonghe Chen

引用次数: 0

Blind image deblurring with edge enhancing total variation regularization 基于边缘增强全变分正则化的盲图像去模糊

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2180852

Yu Shi, Hanyu Hong, Jie Song, Xia Hua

引用次数: 3

Defect structure and optical damage resistance of Zr:Ce:Fe:LiNbO3 crystals Zr:Ce:Fe:LiNbO3晶体的缺陷结构及抗光学损伤性能

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2181652

Xiaojun Wang, Xin Zhang, Lijie Jin, J. Tong, Jie Gao, Zhaopeng Xu

引用次数: 0

GaN ultraviolet detector based demonstrator board for UV-index monitoring 基于GaN紫外探测器的紫外指数监测演示板

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2179752

Man Song, F. Xie, Jun Wang, Tanglin Wang, Jin Guo

引用次数: 0

Effect of random phase errors on coherent beam combining based on liquid crystal phased array 随机相位误差对液晶相控阵相干束合成的影响

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2178389

Jian Chen, Ling-jiang Kong, F. Xiao, Zhenming Yang

{"title":"Effect of random phase errors on coherent beam combining based on liquid crystal phased array","authors":"Jian Chen, Ling-jiang Kong, F. Xiao, Zhenming Yang","doi":"10.1117/12.2178389","DOIUrl":"https://doi.org/10.1117/12.2178389","url":null,"abstract":"The effect of random phase errors on coherent beam combining based on liquid crystal phased array is studied. Utilizing the Fraunhofer propagation principle and probability theory, the analytical expressions of the far-field intensity distribution functions of the output beam are derived. According to these expressions, it can be concluded that as the phase errors increase, the peak intensity of the combined beam in the far-field decreases, the main lobe width widens and the error of deflection angle becomes greater. Considering the influence of random phase errors on the three parameters, a threshold of phase control precision can be designated. When the phase errors are less than the threshold, the performance degradation of the CBC system caused by the phase errors can be accepted. The computer simulations illustrate that the conclusions obtained from analytical expressions are reasonable. In the simulation parameters, the threshold of the phase control precision is λ / 20. The results in this paper can be employed to research methods to reduce the adverse effects of random phase errors and can also be used to determine the phase control precision when using phase-locking algorithms to lock the phase of the beams to be combined in the CBC system.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134320797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discuss on the two algorithms of line-segments and dot-array for region judgement of the sub-satellite purview 讨论了用于子卫星范围区域判断的线段和点阵两种算法

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2181964

H. Nie, Mingming Yang, Yajie Zhu, Peng Zhang

{"title":"Discuss on the two algorithms of line-segments and dot-array for region judgement of the sub-satellite purview","authors":"H. Nie, Mingming Yang, Yajie Zhu, Peng Zhang","doi":"10.1117/12.2181964","DOIUrl":"https://doi.org/10.1117/12.2181964","url":null,"abstract":"When satellite is flying on the orbit for special task like solar flare observation, it requires knowing if the sub-satellite purview was in the ocean area. The relative position between sub-satellite point and the coastline is varying, so the observation condition need be judged in real time according to the current orbital elements. The problem is to solve the status of the relative position between the rectangle purview and the multi connected regions formed by the base data of coastline. Usually the Cohen-Sutherland algorithm is adopted to get the status. It divides the earth map to 9 sections by the four lines extended the rectangle sides. Then the coordinate of boundary points of the connected regions in which section should be confirmed. That method traverses all the boundary points for each judgement. In this paper, two algorithms are presented. The one is based on line-segments, another is based on dot-array. And the data preprocessing and judging procedure of the two methods are focused. The peculiarity of two methods is also analyzed. The method of line-segments treats the connected regions as a set of series line segments. In order to solve the problem, the terminals’ coordinates of the rectangle purview and the line segments at the same latitude are compared. The method of dot-array translates the whole map to a binary image, which can be equal to a dot array. The value set of the sequence pixels in the dot array is gained. The value of the pixels in the rectangle purview is judged to solve the problem. Those two algorithms consume lower soft resource, and reduce much more comparing times because both of them do not need traverse all the boundary points. The analysis indicates that the real-time performance and consumed resource of the two algorithms are similar for the simple coastline, but the method of dot-array is the choice when coastline is quite complicated.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125146851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature sensor and display researched based on micro-deformation of beam splitting mirror in holographic system 研究了全息系统中基于分束镜微变形的温度传感器和显示

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2180057

Delong Yang, Xiuyan Chen, P. Gao, Ji Yu, Xue Sun, Xin Wang

引用次数: 0